Music glass-based double-hollow smooth cavity structure and manufacturing method thereof

Abstract

The invention discloses a music glass-based double-hollow cavity structure and a manufacturing method thereof, and relates to the technical field of music glass, the music glass-based double-hollow cavity structure comprises a superconductive micro-vibration structure layer and an ultra-thin metasurface module, the superconductive micro-vibration structure layer is connected to a glass surface, the ultra-thin metasurface module is connected above the superconductive micro-vibration structure layer, and a hollow sound cavity is formed between the ultra-thin metasurface module and the superconductive micro-vibration structure layer; the superconductive micro-vibration structure layer is further connected with a lower nanometer cavity layer located outside the hollow sound cavity, the lower portion of the ultra-thin metasurface module is connected to an upper nanometer cavity layer, the lower nanometer cavity layer is located in the upper nanometer cavity layer, and a gap is formed between the lower nanometer cavity layer and the upper nanometer cavity layer. And a gap is formed between the lower side nano cavity layer and the ultra-thin metasurface module, and a gap is formed between the upper side nano cavity layer and the superconductive micro-vibration structure layer. The overall size is kept basically unchanged, the low frequency is improved, the high frequency curve is also obviously improved, and the effects of continuous thinning, weight reduction and low power consumption are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of music glass, and particularly relates to a double-hollow smooth cavity structure based on music glass and a manufacturing method thereof. Background Art

[0002] Music glass is a new type of audio product in a professional field. It can be integrated on any glass of automobiles and rail transit, providing customers with an auditory experience that is large-area, highly directional, highly reliable, and reduces the difficulty of tuning, from top to bottom, from left to right, and from front to back. In the future, it will surely replace automotive audio, achieving the goals of thinning, weight reduction, new sound source experience, and the shock of new technology.

[0003] However, because the overall thickness of the skylight, front windshield, etc. of automotive glass is relatively large and it is in a laminated structure state, it causes a research bottleneck and the low-frequency effect is not ideal. At the same time, the goal of music glass is to create a full-frequency audio, but there are problems such as low-frequency improvement and high-frequency decline, or high-frequency improvement and low-frequency decline with speakers. In addition, affected by the curvature of the glass, it will seriously affect the cavity air flow, resulting in an increase in the damping of the glass surface, thus causing a serious decline in low frequency. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-hollow smooth cavity structure based on music glass, so that the overall size remains basically unchanged, not only the low frequency is improved, but also the high-frequency curve is significantly improved, continuing the advantages of thinning, weight reduction, and low power consumption, presenting a brand-new audio experience and giving a brand-new shocking effect to in-vehicle audio.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: A double-hollow smooth cavity structure based on music glass includes a superconducting micro-vibration structure layer and an ultra-thin metasurface module. The superconducting micro-vibration structure layer is connected to the glass surface, and the ultra-thin metasurface module is connected above the superconducting micro-vibration structure layer and a hollow sound cavity is formed therebetween. A lower nano-cavity layer located outside the hollow sound cavity is also connected to the superconducting micro-vibration structure layer. The lower side of the ultra-thin metasurface module is connected to the upper nano-cavity layer. The lower nano-cavity layer is located inside the upper nano-cavity layer and there is a gap between them. There is a space between the lower nano-cavity layer and the ultra-thin metasurface module, and between the upper nano-cavity layer and the superconducting micro-vibration structure layer.

[0006] Furthermore, the outer edges of the upper nano-cavity layer and the superconducting micro-vibration structure layer are aligned.

[0007] Furthermore, the lower nano-cavity layer and the upper nano-cavity layer are made of silica gel materials, with nano-round holes inside, and the nano-round holes are densely stacked.

[0008] Furthermore, the stacking angle of the nano-round holes in the lower nano-cavity layer is greater than that in the upper nano-cavity layer.

[0009] Furthermore, the stacking angle of the nano-round holes in the lower nano-cavity layer is 35 - 45°, and the stacking angle of the nano-round holes in the upper nano-cavity layer is 25 - 35°.

[0010] Furthermore, the upper nano-cavity layer is connected to the ultra-thin metasurface module through an acrylic adhesive system above.

[0011] Furthermore, the lower nano-cavity layer is connected to the superconducting micro-vibration structure layer through a pressure-sensitive adhesive system below.

[0012] Furthermore, the superconducting micro-vibration structure layer includes an ultra-thin module and a superconducting material layer. The superconducting material layer is connected to the glass surface, the ultra-thin module is adhered to the superconducting material layer, and a micro-cavity gap is formed between the ultra-thin module and the glass surface.

[0013] The present invention also discloses a manufacturing method of a double-hollow compliant cavity structure based on music glass, including the following steps: Select an installation area on the glass surface, connect the superconducting micro-vibration structure layer in the installation area, connect the lower nano-cavity layer to the superconducting micro-vibration structure layer, connect the upper nano-cavity layer to the ultra-thin metasurface module, and then connect the ultra-thin metasurface module to the superconducting micro-vibration structure layer, while keeping the lower nano-cavity layer inside the upper nano-cavity layer and having a gap therebetween.

[0014] In summary, the present invention has the following beneficial effects: Applying the principles of micro-vibration and signal amplification surface sound generation, when the internal cavity works, the upper nano-cavity layer and the contacted ultra-thin metasurface module apply an inward driving force to the cavity, and the lower nano-cavity layer and the ultra-thin metasurface module on the contacted superconducting micro-vibration structure layer apply inward and outward driving forces to the cavity; The internal cavity will discharge gas from the left side and enter from the right side according to the compliant cavity design. The lower nano-cavity layer has a high density, ensuring that the gas in the internal cavity is not easily dispersed, increasing the gas compression amount in the internal cavity, ensuring an increase in the amplitude of low frequencies, and enhancing low frequencies and sensitivity; when in use, it can not only ensure a low-frequency shock, but also present a consistent large-area high-frequency feast, continuing to reduce thickness, weight, and power consumption, giving a new shocking effect to in-vehicle audio. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the system composition of a double-hollow compliant cavity structure based on music glass according to the present invention; Figure 2 is a schematic diagram of the overall structure of a double-hollow compliant cavity structure based on music glass according to the present invention; Figure 3 It is a schematic structural diagram of the upper nano-cavity part in a double-hollow compliant cavity structure based on music glass according to the present invention; Figure 4 It is a schematic flow diagram of a manufacturing method of a double-hollow compliant cavity structure based on music glass according to the present invention.

[0016] In the figure, 1 is a superconducting micro-vibration structure layer; 2 is an ultra-thin metasurface module; 3 is a lower nano-cavity layer; 4 is an upper nano-cavity layer; 5 is a nano-round hole; 6 is an acrylic adhesive system. Specific embodiments

[0017] The following further describes the specific embodiments of the present invention with reference to the accompanying drawings. This embodiment does not limit the present invention. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of this application.

[0018] A double-hollow compliant cavity structure based on music glass, as Figure 1 shown, is mainly applied to side windows of rail transit or skylights and front windshields of automobiles, etc., as Figure 1 and Figure 2 shown, and includes a superconducting micro-vibration structure layer 1 and an ultra-thin metasurface module 2. The superconducting micro-vibration structure layer 1 is connected to the glass surface, and the ultra-thin metasurface module 2 is connected above the superconducting micro-vibration structure layer 1 and forms a hollow sound cavity therebetween; a lower nano-cavity layer 3 located outside the hollow sound cavity is connected to the superconducting micro-vibration structure layer 1, and the upper nano-cavity layer 4 is connected below the ultra-thin metasurface module 2. The upper nano-cavity layer 4 is located outside the lower nano-cavity layer 3 and there is a gap therebetween. There is a space between the lower nano-cavity layer 3 and the ultra-thin metasurface module 2, and between the upper nano-cavity layer 4 and the superconducting micro-vibration structure layer 1.

[0019] As Figure 2 shown, the superconducting micro-vibration structure layer 1 is a diaphragm formed based on glass metasurface technology obtained through multiple acoustic simulations on the glass surface; when working, with only a slight amplitude, the superconducting micro-vibration structure layer 1 can combine with the nano-cavity to amplify the audio signal; Among them, the superconducting micro-vibration structure layer 1 includes an ultra-thin module (metasurface) and a superconducting material layer. The superconducting material layer is connected to the glass surface, and the ultra-thin module is adhered to the superconducting material layer, and a micro-cavity gap is formed between the ultra-thin module and the glass surface; First, on the glass surface (the glass surface can be the glass surface of any vehicle), the best area is determined through means such as simulation design. According to the size of the area, the ultra-thin module is designed, and secondary acoustic simulation is carried out on the ultra-thin module. Then, the audio drive module is placed on the ultra-thin module and fixed; finally, the superconducting material is used to transmit the micro-vibration acoustic wave signal to the glass surface, and the nano-cavity is provided to amplify the acoustic wave signal; The position of the superconducting material layer on the ultra-thin module can also be obtained by means such as acoustic simulation (the third acoustic simulation) to ensure optimal superconducting transmission of audio signals on the glass surface. The gap between the ultra-thin module and the glass forms a micro-cavity (supported by the superconducting material layer around the perimeter and not sealed), and the superconducting material is bonded and fixed to the ultra-thin module using acrylic adhesive to form the final superconducting micro-vibration structure layer 1, which further improves the low-frequency performance and solves the bottleneck of the inability to improve the low frequency of the music glass.

[0020] As Figure 2 shown, the ultra-thin metasurface module 2 is a smooth metasurface formed by nano-microstructures. The upper nano-cavity layer 4 is in contact and bonded with it and serves as the sealing cover of the sound cavity; the lower nano-cavity layer 3 is fixed to the superconducting micro-vibration structure layer 1 to form a whole; When the music glass works, the upper ultra-thin metasurface module 2 generates a downward force to strengthen the pushing of the internal gas; the lower superconducting micro-vibration structure layer 1 generates a bidirectional force, so that the entire double-layer hollow cavity structure has sufficient air flow, and the amplitude is superimposed twice, making the sound cavity in a "breathing" state to ensure a shocking low-frequency effect; in addition, the ultra-thin metasurface module 2 compensates for high-frequency losses through special internal nano-structures to ensure continuous improvement of high-frequency performance.

[0021] As Figure 2 and Figure 3 shown, the lower nano-cavity layer 3 and the upper nano-cavity layer 4 are made of silica gel materials. Nano-round holes 5 (nano-hole cavities formed in the silica gel materials) are provided inside, and the nano-round holes 5 are densely stacked; in some embodiments, the stacking angle of the nano-round holes 5 in the lower nano-cavity layer 3 is greater than the stacking angle of the nano-round holes 5 in the upper nano-cavity layer 4. The stacking angle of the nano-round holes 5 in the lower nano-cavity layer 3 is 35 - 45°, and the stacking angle of the nano-round holes 5 in the upper nano-cavity layer 4 is 25 - 35°; Specifically, in this embodiment, the upper nano-cavity layer 4 uses a silica gel material with a low specific gravity, delicate and uniform pore diameters. Nano-round holes with an angle of 30° are formed inside it, densely stacked, and both sides are in the form of nano-holes to ensure that air enters the hollow sound cavity from one end through the nano-holes and is also convenient for discharging from one side inside and outside. The lower nano-cavity layer 3 uses a silica gel material with a higher specific gravity, delicate and uniform pore diameters. Nano-round holes with an angle of 40° are formed inside it, densely stacked, and both sides are in the form of nano-holes, which can ensure that air passes more regularly through the inner nano-layer cavity processing holes into the hollow sound cavity from the gap between the lower nano-cavity layer 3 and the upper nano-cavity layer 4 and is also convenient for discharging from the other side. In addition, the upper nano-cavity layer 4 and the lower nano-cavity layer 3 preferably have silicone materials with excellent flame retardancy, high temperature resistance, low specific gravity, water resistance, shock absorption, sealing, heat insulation, ultraviolet resistance, ozone resistance, good compression deformation resistance and creep resistance, etc.; in some other embodiments, the material of the upper nano-cavity layer 4 is the same as that of the lower nano-cavity layer 3, but the internal nano-pores are different.

[0022] As Figure 2 and Figure 3 shown, the upper nano-cavity layer 4 is aligned with the outer edges of the superconducting micro-vibration structure layer 1 and the ultra-thin metasurface module 2; Above the upper nano-cavity layer 4, it is connected to the ultra-thin metasurface module 2 through the acrylic adhesive system 6. The acrylic adhesive system 6 has the advantages of thin thickness, high bonding strength, strong anti-pushing performance, high seismic resistance and strong environmental resistance, realizing the fitting with the ultra-thin metasurface module 2; the lower surface of the upper nano-cavity layer 4 is subjected to pressure-sensitive treatment to ensure a smooth plane and high hardness, facilitating shaping; Below the lower nano-cavity layer 3, it is connected to the superconducting micro-vibration structure layer 1 through the pressure-sensitive adhesive system. The pressure-sensitive adhesive system has the advantages of thin thickness, high bonding strength, high seismic resistance and good sealing, realizing the connection with the ultra-thin metasurface module 2. The upper surface of the lower nano-cavity layer 3 is subjected to pressure-sensitive treatment to ensure a smooth plane and high hardness, facilitating shaping.

[0023] This embodiment also discloses a manufacturing method of the double-hollow compliant cavity structure of the music glass. Taking the skylight as an example, as Figure 4 shown, it includes the following steps, Step S10, using acoustic simulation technology, performing acoustic simulation on the skylight to find the best installation area, and connecting the superconducting micro-vibration structure layer 1 in the installation area, Specifically including, Step S11, designing the size of the ultra-thin module according to the installation area range; Step S12, performing secondary acoustic simulation based on the ultra-thin module to obtain the positions and required quantities of the driving components, and performing the design of the array; Step S13, using the buffer layer to fix the driving components on the ultra-thin module, and at the same time designing the driving cavity to improve the full-frequency performance of surface sound emission, Step S14, performing the third acoustic simulation to determine the positions and quantities of the best superconducting material layers, bonding the superconducting materials to the ultra-thin module through the buffer layer, and contacting and bonding the superconducting materials to the skylight glass surface; at the same time, it can be further fixed firmly through the acrylic adhesive; By superimposing multiple layers of cavities, increasing the driving force of the gas, and increasing the amplitude of the diaphragm, the final superconducting micro-vibration structure layer 1 is completed.

[0024] Step S20, connect the upper nano-cavity layer 4 to the ultra-thin metasurface module 2, and align the edge position of the lower part of the upper nano-cavity layer 4 with the superconducting micro-vibration structure layer 1 without contact (hanging below), and seal and connect the four sides of the superconducting micro-vibration structure layer 1; Connect the lower nano-cavity layer 3 to the superconducting micro-vibration structure layer 1, and keep the upper ultra-thin metasurface module 2 of the lower nano-cavity layer 3 not in contact (hanging), and seal the four sides; Then connect the ultra-thin metasurface module 2 to the superconducting micro-vibration structure layer 1 (connected to the upper side of the driving component through structures such as a buffer layer), and at the same time keep the lower nano-cavity layer 3 inside the upper nano-cavity layer 4 with a gap between them, so as to seal the sound cavity through the ultra-thin metasurface module 2; According to the forward flow state of air flow, enhance the air compression inside the cavity, and complete the forward cavity design; make it pass through the nano-cavity pore layer of 2 layers, increase the gas compression amount inside the cavity, ensure the increase of low-frequency amplitude, and improve low frequency and sensitivity; when the superconducting micro-vibration structure layer 1 moves, it drives the ultra-thin metasurface module 2 to vibrate, and the upper and lower ultra-thin metasurface modules generate bidirectional forces to strengthen the internal gas propulsion, and high-frequency sound waves will be secondarily superimposed through the ultra-thin metasurface module 2, making the sound cavity in a "breathing" state.

[0025] Among them, the forward cavity design refers to a dynamic cavity design in which the upper and lower nano-cavities enhance the air compression inside the cavity according to the forward flow state of air flow; First, design the upper nano-cavity layer 4. The upper nano-cavity layer 4 contacts the ultra-thin metasurface module 2 and is adhesively fixed according to the edge of the ultra-thin metasurface module 2. The lower part of the upper nano-cavity layer 4 is in a suspended state, aligned with the edge position of the superconducting micro-vibration structure layer 1, and a certain small gap is reserved without contact.

[0026] Then, design the lower nano-cavity layer 3. There is a small gap between the lower nano-cavity layer 3 and the upper nano-cavity layer 4. The lower part of the lower nano-cavity layer 3 is adhesively bonded on the superconducting micro-vibration structure layer 1 (ultra-thin module), and the upper part is in a suspended state and does not contact the ultra-thin metasurface module 2.

[0027] In addition, the upper and lower nano-cavity structure layers are hermetically designed around according to the size of the superconducting micro-vibration structure layer 1, so that the internal structure cannot be seen from the outside; When the internal cavity works, the upper nano-cavity layer 4 and the contacted ultra-thin metasurface module 2 apply a driving force to the cavity inward, the lower nano-cavity layer 3 and the ultra-thin module on the superconducting micro-vibration structure layer 1 contacted apply driving forces to the cavity inward and outward, and the internal cavity discharges air from the left side, enters from the right side according to the forward cavity design, and the lower nano-cavity layer 3 has a higher density, ensuring that the gas inside the cavity is not easily dispersed, increasing the gas compression amount inside the cavity, ensuring the increase of low-frequency amplitude, and improving low frequency and sensitivity.

[0028] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the technical solution of the present invention.

Claims

1. A double hollow cavity structure based on music glass, characterized by: It includes a superconducting micro-vibration structure layer and an ultra-thin ultra-surface module, wherein the superconducting micro-vibration structure layer is connected to the glass surface, and the ultra-thin ultra-surface module is connected above the superconducting micro-vibration structure layer to form a hollow sound cavity between them; The superconducting micro-vibration structure layer is connected to a lower nano-cavity layer located outside the hollow sound cavity, the ultra-thin ultra-surface module is connected to the upper nano-cavity layer below, the lower nano-cavity layer is located in the upper nano-cavity layer with a gap, and there is a gap between the lower nano-cavity layer and the ultra-thin ultra-surface module, and between the upper nano-cavity layer and the superconducting micro-vibration structure layer.

2. According to claim 1, a double hollow cavity structure based on music glass is characterized by: The upper nanocavity layer is aligned with the outer edge of the superconducting micro-vibration structure layer.

3. According to claim 1, a double hollow cavity structure based on music glass is characterized by: The lower nano-cavity layer and the upper nano-cavity layer are made of silica gel material, and nano-circular holes are arranged inside, and the nano-circular holes are densely stacked.

4. The double hollow cavity structure based on music glass according to claim 3 is characterized by: The stacking angle of the nano-circular holes in the lower nano-cavity layer is greater than the stacking angle of the nano-circular holes in the upper nano-cavity layer.

5. The double hollow cavity structure based on music glass according to claim 4 is characterized in that: The stacking angle of the nano-circular holes in the lower nano-cavity layer is 35-45°, and the stacking angle of the nano-circular holes in the upper nano-cavity layer is 25-35°.

6. The double hollow cavity structure based on music glass according to claim 1 is characterized in that: The upper nanocavity layer is connected to the ultra-thin ultra-surface module via an acrylic adhesive system.

7. A double hollow cavity structure based on music glass according to claim 1 or 6, characterized in that: The lower side nano cavity layer is connected to the superconducting micro-vibration structure layer through a pressure-sensitive adhesive system.

8. The double hollow cavity structure based on music glass according to claim 1 is characterized by: The superconducting micro-vibration structure layer includes an ultra-thin module and a superconducting material layer. The superconducting material layer is connected to the glass surface, and the ultra-thin module is bonded to the superconducting material layer, and the ultra-thin module and the glass surface form a micro cavity gap.

9. A method for manufacturing a double hollow cavity structure based on music glass according to claim 1, characterized in that: The following steps are included: An installation area is selected on the glass surface, and a superconducting micro-vibration structure layer is connected in the installation area, the lower nano-cavity layer is connected to the superconducting micro-vibration structure layer, the upper nano-cavity layer is connected to the ultra-thin ultra-surface module, and then the ultra-thin ultra-surface module is connected to the superconducting micro-vibration structure layer, while keeping the lower nano-cavity layer in the upper nano-cavity layer with a gap between them.

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